RFCOMM_RX_THROTTLED
if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags))
if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags))
if (!test_bit(RFCOMM_RX_THROTTLED, &d->flags) &&
if (test_bit(RFCOMM_RX_THROTTLED, &d->flags))